Possible Odderon Effects in Hadron-Nucleon Scattering

TL;DR

This paper investigates the potential impact of Odderon exchange on differences in particle-antiparticle scattering observables, finding partial compatibility with experimental data but also highlighting inconsistencies and data limitations.

Contribution

It analyzes the possible effects of Odderon exchange on various scattering differences, providing insights into its experimental signatures and constraints.

Findings

Odderon contribution may explain differences in total cross sections.

Current data are insufficient to conclusively confirm Odderon effects.

Large Odderon effects are inconsistent with certain measured ratios.

Abstract

We consider the possible contribution of Odderon (Reggeon with \alpha_{Odd}(0) \sim 1 and negative signature) exchange to the differences in the total cross sections of particle and antiparticle, to the ratios of real/imaginary parts of the elastic pp amplitude, and to the differences in the inclusive spectra of particle and antiparticle in the central region. The experimental differences in total cross sections of particle and antiparticle are compatible with the existence of the Odderon component but such a large Odderon contribution seems to be inconsistent with the values of Re/Im ratios. In the case of inclusive particle and antiparticle production the current energies and/or accuracy of the experimental data don't allow a clear conclusion.